337 citations · 791 across the 21 of their papers we have counts for
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The cosmological collider in inflation
Yi-Peng Wu
Starobinsky's inflation manifests a best-fit scenario for the power spectrum of primordial density fluctuations. Observables derived from the slow-roll picture of the m…
Induced gravitational waves from the cosmic coincidence
Shyam Balaji, Joseph Silk, Yi-Peng Wu
The induced gravitational wave (GW) background from enhanced primordial scalar perturbations is one of the most promising observational consequences of primordial black hole (PBH)…
The cosmic coincidences of primordial-black-hole dark matter
Yi-Peng Wu, Elena Pinetti, Joseph Silk
If primordial black holes (PBHs) contribute more than 10 percent of the dark matter (DM) density, their energy density today is of the same order as that of the baryons. Such a cos…
Constant-rate inflation: primordial black holes from conformal weight transitions
Kin-Wang Ng, Yi-Peng Wu
Constant-rate inflation, including ultra-slow-roll as a special case, has been widely applied to the formation of primordial black holes with significant deviation from the standar…
Peak statistics for the primordial black hole abundance
Yi-Peng Wu
The primordial black hole (PBH) abundance evaluated by the conventional Press-Schechter (PS) probability distribution is shown to be equivalent to the high-peak limit of a special…
Hybrid Quasi-Single Field Inflation
Yi Wang, Yi-Peng Wu, Jun'ichi Yokoyama +1
The decay of massive particles during inflation generates characteristic signals in the squeezed limit of the primordial bispectrum. These signals are in particular distinctive in…
Probing gravitational non-minimal coupling with dark energy surveys
Chao-Qiang Geng, Chung-Chi Lee, Yi-Peng Wu
We investigate observational constraints on a specific one-parameter extension to the minimal quintessence model, where the quintessence field acquires a quadratic coupling to the…
Primordial black holes from temporally enhanced curvature perturbation
Teruaki Suyama, Yi-Peng Wu, Jun'ichi Yokoyama
Scalar field with generalized kinetic interactions metamorphoses depending on its field value, ranging from cosmological constant to stiff matter. We show that such a scalar field…
Density Perturbation Growth in Teleparallel Cosmology
Chao-Qiang Geng, Yi-Peng Wu
We study the cosmological perturbations in teleparallel dark energy models in which there is a dynamical scalar field with a non-minimal coupling to gravity. We find that the propa…